package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.utils.result.PageResult;
import com.sky.service.DishService;
import com.sky.utils.result.Result;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.GetMapping;

import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {

    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    /*
     * 新增菜品和口味
     * */

    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish=new Dish();
        //对象拷贝
        BeanUtils.copyProperties(dishDTO,dish);
        //向菜品表中插入一条数据
        dishMapper.insert(dish);

        //获取insert语句生成的主键值
        Long dishId = dish.getId();

        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && flavors.size()>0)
        {
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
            //向口味表里插入n条数据
            dishFlavorMapper.insetBatch(flavors);

        }


    }
    /*
     *
     * 菜品分页查询
     * */

    @Override
    public PageResult PageQuery(DishPageQueryDTO dishPageQueryDTO) {

        //select * from Dish where limit

       /* DishVO dishVO=new DishVO();
        //对象拷贝
        BeanUtils.copyProperties(dishPageQueryDTO,dishVO);*/

        //开始分页
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());

        Page<DishVO> page= dishMapper.PageQuery(dishPageQueryDTO);

        return new PageResult(page.getTotal(),page.getResult());
    }
    /*
     * 菜品批量删除
     * */

    @Transactional
    public void deleteBatch(List<Long> ids) {
        //判断当前菜品是否能够删除 ----是否存在起售中的菜品
        for (Long id : ids) {
         Dish dish = dishMapper.getById(id);
         if (dish.getStatus()== StatusConstant.ENABLE)
         {
             //被关联了不能删除
             throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
         }
        }
        //判断当前菜品是否能够删除--是否被菜品关联
        List<Long> setmealIds = setmealDishMapper.getSetmealByDishIds(ids);
        if (setmealIds != null && setmealIds.size()>0)
        {
            //被关联了不能删除
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }

        //删除菜品表中的菜品数据
        for (Long id : ids) {
            dishMapper.deleteById(id);
            //删除菜品关联的口味数据
            dishFlavorMapper.deleteByDishID(id);
        }


    }
    /*
     * 根据id查询菜品和对应的口味数据
     * */


    /*
     * 根据id修改具体的菜品和对应的口味信息
     * */


}